Oeko-Tex number and the institute behind it
Oct 07, 2026
Short answer: The number on an Oeko-Tex Standard 100 label is the identifier of the certificate, and it can be looked up on the Oeko-Tex website. The institute behind it is the independent test house that tested the textile. Here is what each tells you and how to use them.
What the number is
The number is a code that ties the label to a specific certificate. It appears with the name of the institute on the tag. By entering it on the Oeko-Tex website you can see who the certificate was issued to and what it covers. Without a number the label cannot be checked. See a selection of bamboo knickers.
Who the institute is
Oeko-Tex is a partnership of independent test institutes in several countries. The institute named on the tag is the one that carried out the test and issued the certificate. The name can vary from country to country, so read what it says and do not let it confuse you.
How to read the label
The label typically has the logo, a number, the name of the institute and often a year. Sometimes the product class is shown too. Read it all and write down the number. Then you have what you need to check the label. It takes little time and gives a safer answer than the logo alone.
Check the number online
Go to the Oeko-Tex website, find the place for checking and enter the number with the code that is required. The certificate is then shown with recipient, product groups and validity. See whether it matches what you are buying and whether it is still valid.
What the number does not tell you
The number says nothing about where the knickers were sewn or how long they last. It says nothing about fit either. It points to a certificate about the content of certain substances. Use it as one piece of information and look at the description and size guide too.
If the number is missing
If the number is missing, you cannot check the label and should not give it much weight. Ask the seller and request the number. A serious seller can give it to you. If the answer is unclear, it is wise to wait with the purchase until you have clarity.
Product classes and what they mean
The label is divided into four product classes, where class I covers textiles for the youngest users and class II covers textiles with direct skin contact. Knickers typically fall into class II. The class tells you which limits were used. Also see bamboo underwear for women.
Care whatever the number
The number does not change the care instructions. Follow the instructions in the knickers, choose a gentle programme and avoid fabric softener and high heat. For combinations, look at bamboo tops for women, which suit everyday wear alongside the underwear.
Frequently asked questions
Where do I find the Oeko-Tex number?
Look at the label in the garment or in the product description. The number appears with the name of the institute and is used to look the certificate up online.
Who is the institute behind the label?
It is an independent test institute that tested the textile and issued the certificate. The name appears on the tag together with the number.
What if the number is missing?
Then you cannot check the label. Ask the seller for the number, and be careful about giving the label weight if it cannot be documented.
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